So far so mostly good! I haven't been able to get the help file to display after pressing F1, and the computer froze completely while I was working with items in the menus (must not have been able to find something).
But all my information from the Windows computer transferred without a problem, so that's the main thing! I have not been able to enter a blank line (shift-enter) after a paragraph, but that's minor.
The next trick will be to move my main .brn to a network place. And to re-learn keystrokes after having been away from the program while working with Linux.